Harmonic

Harmonic operates a startup data platform positioned as a "startup discovery engine" for investors and other commercial teams. The company tracks companies and the people inside them over time, capturing signals such as hiring, fundraising, product launches and changes in direction, and surfaces those changes to users so they can act on them.

The product spans three stated workflows: discovery, research and action. Discovery includes granular filters over company and people data (background, education, experience) and a network layer that maps and monitors a team's relationships by syncing connections from inboxes, calendars and LinkedIn. Research includes agentic research reports that combine Harmonic's proprietary data with web sources, plus investor search by stage, sector, geography, check size and investment activity. The action layer provides opportunity tracking and collaboration inside the platform. Harmonic also markets Scout, an AI agent for investors that runs recurring user-defined jobs on a schedule — examples cited include portfolio momentum breakouts, stealth founder triage, an exit and M&A scanner, a hiring and talent tracker, a new funding sweep and a leadership change watch.

Data is delivered through multiple channels beyond the web application: a Chrome extension, a purpose-built MCP server for use with AI assistants, no-code automation via Zapier and n8n, bulk data delivery into a customer's data warehouse or cloud, and a documented API. [0]

Business model

Harmonic sells access to its startup dataset and software to organizations, with a pricing page and a book-a-demo, sales-led signup flow on its website. Data is made available through the web product as well as an API, bulk delivery to a customer's data warehouse or cloud, a Chrome extension, an MCP server and no-code integrations. [0]

Traction

The company states that thousands of investors use the platform, aggregating their interest into a quarterly Harmonic Hot 25 Startups ranking published from at least Q2 2025 through Q3 2026. Ten named customer stories are published, covering venture, growth, corporate and recruiting users. A customer testimonial attributed to a "Tier 1 VC" reports finding four of its last nine deals through Harmonic. [0]

Latest developments

Harmonic markets Scout, an AI agent for investors that executes recurring, user-defined monitoring jobs, alongside agentic research reports and a purpose-built MCP server for use with AI assistants. Its most recent published Harmonic Hot 25 Startups list is for Q3 2026, led by Resolve AI, Salient and Aaru. [0]